League expansion is always a tricky one as there is obviously no way of guaranteeing, especially in the batshit world of Scottish football, that the likely benefits would come to pass. Add in the relatively low number of full time clubs and there's the potential for a ring fencing of the top league by proxy. Not to say that would be much different from the status quo.
The less meaningful games argument is a bit of a red herring though, as less games against teams around you would surely make those more meaningful. If you have to overhaul 5 points on a team and know you won't play them again after February would that not make that game more meaningful? Less immediate pressure of relegation would also surely encourage more youngsters being properly integrated as opposed to occasionally chucked in as is the case for most teams at the moment.